对有爆炸、燃烧危险的物品等要按规定妥善存放和管理。
参考答案：错
Money plays an important role in ______ material world. But expecting ______ money to give happiness may be missing the meaning of life.
A．a; the
B．the; 不填
C．不填; 不填
D．the; the
实际测量时，背景噪声低于声级（）分贝时可以不计入。
A.20
B.10
C.8
D.3
